I'm thinking about fitting kingspan to the tiled roof in my loft. It's all boarded out up there and is only partially full of 'things to keep' (JUNK!)

I have found though, that a little TV has appeared and an old, but extremely well fitting chair, a small oil filled rad, as well as a small fridge.....with tins of beer in it!!!!!!

Now, I was hoping to insulte it so that it's cooler in summer and warmer in winter. It does get hot up there in summer. I don't really plan on boarding and skimming it as I feel it will attract some of the female members of my household up there, which I don't want :LOL: The odd draught is no problem either.

The roof is proper slates, it's a 1920-30s former council house, there's no roofing felt and a lot of dirty grey hairy plaster on the underside. All in all the underside of the roof is in good nick IMO.

I have some kingspan and a mate of mine offered me a bit cheap that he's got in his unit. Said he doesn't envisage using it in the near future and it's taking up valuable space.

How thick do I need it for this appliaction (doesn't have to fit regs just help out with the temperature). Also is it best to fit it in between the joists (I assume so) and how's it best to fix it. I've read about various techniques so thought the best thing was to ask on here.

Panels are the silver foil lined 75mm ones. I think my mates ones are 100mm. Unsure of the correct name for them. It doesn't have to be a perfect job, but thought As I had these left over from my folks extension and as my mate will let me have them cheap off him it would be worth doing.

After re-reading my initial post, the chair is a light weight fishing one, I'm not going to come crashing through the ceiling (at least I hope not).

If your rafters are 100mm and the kingspan is 100mm or 75mm then you
will not be able to use it between the rafters as you need to leave a
50mm air gap, unless you plant on a 50 x 50mm batten to the underside
of the rafters
Personally l would invest in a shed much cooler in the summer and more
cosy in the winter with a heater and you can also put a lock on the
inside

_________________There would be less trouble in the world
if l had not had six daughters

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